Liquid ejecting apparatus

Abstract

Provided is a liquid ejecting apparatus for ejecting a liquid, including: a depressurizing pump: a liquid storing chamber which includes an inlet for the liquid and stores the liquid; a first partition wall portion which has flexibility and gas permeability; a first pressure control chamber which is adjacent to the liquid storing chamber with the first partition wall portion interposed therebetween; a pressure control valve which opens or seals the inlet in response to displacement of the first partition wall portion; and a switching valve which is connected to the first pressure control chamber and the depressurizing pump and selects an arbitrary state among a first communication state where the first pressure control chamber communicates with an atmosphere, a second communication state where the first pressure control chamber communicates with the depressurizing pump, and a sealed state where the first pressure control chamber is sealed.

1 . A liquid ejecting apparatus for ejecting a liquid, comprising:
 a depressurizing pump:   a liquid storing chamber which includes an inlet for the liquid and stores the liquid;   a first partition wall portion which has flexibility and gas permeability;   a first pressure control chamber which is adjacent to the liquid storing chamber with the first partition wall portion interposed therebetween;   a pressure control valve which opens or seals the inlet in response to displacement of the first partition wall portion; and   a switching valve which is connected to the first pressure control chamber and the depressurizing pump and selects an arbitrary state among a first communication state where the first pressure control chamber communicates with an atmosphere, a second communication state where the first pressure control chamber communicates with the depressurizing pump, and a sealed state where the first pressure control chamber is sealed.   
   
   
       2 . The liquid ejecting apparatus according to  claim 1 , further comprising:
 a bubble removing mechanism which is disposed on the downstream side of the liquid storing chamber in a liquid channel and removes bubbles contained in the liquid.   
   
   
       3 . The liquid ejecting apparatus according to  claim 2 ,
 wherein the bubble removing mechanism includes:
 a bubble removing chamber which stores the liquid and captures the bubbles; 
 a second partition wall portion which has gas permeability; and 
 a second pressure control chamber which is adjacent to the bubble removing chamber with the second partition wall portion interposed therebetween, and is connected to the depressurizing pump. 
   
   
   
       4 . The liquid ejecting apparatus according to  claim 1 , further comprising:
 an ejection port which is disposed on the downstream side of the liquid storing chamber and ejects the liquid; and   a suction mechanism which is connectable to the ejection port.